TY - JOUR KW - Ambulatory Care KW - Chromatography, High Pressure Liquid KW - False Negative Reactions KW - False Positive Reactions KW - Health Behavior KW - Humans KW - Immunoassay KW - Occupational Health KW - Opioid-Related Disorders/diagnosis KW - Primary Health Care KW - Specimen Handling KW - Substance Abuse Detection/methods/standards KW - Urinalysis AU - J. B. Standridge AU - S. M. Adams AU - A. P. Zotos A1 - AB - Urine drug screening can enhance workplace safety, monitor medication compliance, and detect drug abuse. Ordering and interpreting these tests requires an understanding of testing modalities, detection times for specific drugs, and common explanations for false-positive and false-negative results. Employment screening, federal regulations, unusual patient behavior, and risk patterns may prompt urine drug screening. Compliance testing may be necessary for patients taking controlled substances. Standard immunoassay testing is fast, inexpensive, and the preferred initial test for urine drug screening. This method reliably detects morphine, codeine, and heroin; however, it often does not detect other opioids such as hydrocodone, oxycodone, methadone, fentanyl, buprenorphine, and tramadol. Unexpected positive test results should be confirmed with gas chromatography/mass spectrometry or high-performance liquid chromatography. A positive test result reflects use of the drug within the previous one to three days, although marijuana can be detected in the system for a longer period of time. Careful attention to urine collection methods can identify some attempts by patients to produce false-negative test results. BT - American Family Physician C5 - Opioids & Substance Use CP - 5 CY - United States IS - 5 JF - American Family Physician N2 - Urine drug screening can enhance workplace safety, monitor medication compliance, and detect drug abuse. Ordering and interpreting these tests requires an understanding of testing modalities, detection times for specific drugs, and common explanations for false-positive and false-negative results. Employment screening, federal regulations, unusual patient behavior, and risk patterns may prompt urine drug screening. Compliance testing may be necessary for patients taking controlled substances. Standard immunoassay testing is fast, inexpensive, and the preferred initial test for urine drug screening. This method reliably detects morphine, codeine, and heroin; however, it often does not detect other opioids such as hydrocodone, oxycodone, methadone, fentanyl, buprenorphine, and tramadol. Unexpected positive test results should be confirmed with gas chromatography/mass spectrometry or high-performance liquid chromatography. A positive test result reflects use of the drug within the previous one to three days, although marijuana can be detected in the system for a longer period of time. Careful attention to urine collection methods can identify some attempts by patients to produce false-negative test results. PP - United States PY - 2010 SN - 1532-0650; 0002-838X SP - 635 EP - 640 EP - T1 - Urine drug screening: a valuable office procedure T2 - American Family Physician TI - Urine drug screening: a valuable office procedure U1 - Opioids & Substance Use U2 - 20187600 VL - 81 VO - 1532-0650; 0002-838X Y1 - 2010 ER -